如何使用Node.js串流MongoDB查询结果? [英] How to stream MongoDB Query Results with nodejs?

问题描述

我一直在寻找如何将MongoDB查询结果流式传输到nodejs客户端的示例.到目前为止，我发现的所有解决方案似乎都是立即读取查询结果，然后将结果发送回服务器.

I have been searching for an example of how I can stream the result of a MongoDB query to a nodejs client. All solutions I have found so far seem to read the query result at once and then send the result back to the server.

相反，(显然)我想为查询方法提供一个回调，并在结果集的下一个块可用时让MongoDB调用.

Instead, I would (obviously) like to supply a callback to the query method and have MongoDB call that when the next chunk of the result set is available.

我一直在看猫鼬-我可能应该使用其他驱动程序吗?

I have been looking at mongoose - should I probably use a different driver?

Jan

推荐答案

Mongoose中的流式传输在2.4.0版本中可用，该版本出现在

Streaming in Mongoose became available in version 2.4.0 which appeared three months after you've posted this question:

Model.where('created').gte(twoWeeksAgo).stream().pipe(writeStream);

可以在其文档页面中找到详细说明的示例.

More elaborated examples can be found on their documentation page.

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